Yeah, good point. It's the net gain that we're looking for. I never bothered to weigh mine before/after so I can't be of help. Like I said, the strength is never really a problem. I've never heard of a set of epoxy or probond wings coming apart from the sheeting letting up. If it ever happened I'd imagine it was more of an application issue than glue joint strength.

Just curious, how many fluid ounces of epoxy is in one ounce? Seems like it wouldn't be a lot.